package netty.simple;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * Created by IntelliJ
 * Author:熊磊
 */
public class ClientHandler extends ChannelInboundHandlerAdapter {

    //当通道就绪时就会触发该方法
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("client :" + ctx);
        ctx.writeAndFlush(Unpooled.copiedBuffer("hello server: (>^W^<)喵", CharsetUtil.UTF_8));
    }

    //当服务器端回送消息时触发
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf byteBuf = (ByteBuf) msg;
        System.out.println("服务器回复的消息 : " + byteBuf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址 : " + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
